Thermal R&D 2.5" vs. 3"

[PurpleIcedExpoST]

Does anybody else’s Thermal 3” make a pop noise here and there? Think it happens when you let go of the gas. I like it, don’t get me wrong, but is it normal?

Yes! And it gets even more burble-y with different tunes. 3inch Thermal is the best on these rides

 

[LuxST]

Yes! And it gets even more burble-y with different tunes. 3inch Thermal is the best on these rides

Heck yeah! I love it. With CVF Downpipes it’s mean. My factory (probably everybody else’s too) DP failed and flex pipe failed so had to upgrade and am very impressed with the 3”. I’ve had them on for almost 2 months and had tons of compliments.

 

[Polizi212]

Does anybody else’s Thermal 3” make a pop noise here and there? Think it happens when you let go of the gas. I like it, don’t get me wrong, but is it normal?

My 2.5" Thermal will do that on occasion.

 

[2020FordRaptor]

Does anybody else’s Thermal 3” make a pop noise here and there? Think it happens when you let go of the gas. I like it, don’t get me wrong, but is it normal?

Totally normal. It’s the excess fuel from the cylinder being extinguished.